<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>风和日丽</title>
    <style>
        .huaban {
            width: 1300px;
            height: 600px;
            border: 2px solid black;
            background-color: lightblue;
            overflow: hidden;
            position: absolute;
            /* 超出当前标签部分的内容，全部被隐藏*/
            /* 但是对定位的子元素，是影响不到的（因为定位的元素脱离了地平面） */
        }

        .mountain1 {
            width: 400px;
            height: 400px;
            background-color: green;
            position: absolute;
            border-top-left-radius: 100px;
            transform: rotate(50deg);
            top: 350px;
            left: 0px;
        }

        .mountain2 {
            width: 600px;
            height: 600px;
            background-color: green;
            border-top-left-radius: 100px;
            position: absolute;
            transform: rotate(50deg);
            top: 300px;
            left: 290px;
        }

        .mountain3 {
            width: 300px;
            height: 300px;
            background-color: green;
            border-top-left-radius: 100px;
            transform: rotate(50deg);
            position: absolute;
            top: 340px;
            left: 890px;
            z-index: 1;
        }

        .sun{
            width: 100px;
            height: 100px;
            background-color: yellow;
            border-radius: 50%;
            position: absolute;
            top: 0px;
            left: 0px;
            animation: sun 3s linear forwards ;
        }
        @keyframes sun{
            0%{
                top: 550px;
                left: 50px;

            }
            100%{
                top: 0px;
                left: 1000px;
            }
        }
        .cloud {
            width: 300px;
            height: 100px;
            position: absolute;
            animation: cloudMove 5s infinite linear reverse  4s;

        }
        @keyframes cloudMove{
            0%{
                left: 0px;

            }
            50%{
                left: 600px;
            }
            100%{
                left: 0px;
            }
        }

        .cloud1 {
            width: 80px;
            height: 50px;
            border-radius: 50%;
            background-color: white;
            position: absolute;
            left: 0px;
            top: 30px;
        }

        .cloud2 {
            width: 150px;
            height: 80px;
            border-radius: 50%;
            background-color: white;
            position: absolute;
            left: 30px;
            top: 0px;
        }

        .cloud3{
            width: 140px;
            height: 70px;
            border-radius: 50%;
            background-color: white;
            position: absolute;
            left: 86px;
            top: 13px;
        }
        .windmill{
            width: 10px;
            height: 150px;
            background-color: tomato;
            position: absolute;
            left: 900px;
            top: 305px;

        }
        .fc{
            width: 150px;
            height: 150px;
            position: absolute;
            right: 320px;
            top: 230px;
            animation: fc 100ms infinite reverse  5s;
        }
        @keyframes fc{
            0%{
                transform:rotate(0deg);
  
            }
            100%{
                transform:rotate(360deg);
            }
        }
        .fc1{
            width: 150px;
            height: 10px;
            position: absolute;
            background-color: white;
            border-radius: 50%;
            top: 70px;
        }
        .fc2{
            width: 10px;
            height: 150px;
            position: absolute;
            background-color: white;
            border-radius: 50%;
            top: 0px;
            right: 70px;
        }
    </style>
</head>

<body>
    <div class="huaban">
        <div class="sun"></div>
        <div class="mountain1"></div>
        <div class="mountain2"></div>
        <div class="mountain3"></div>
        <div class="cloud">
            <div class="cloud1"></div>
            <div class="cloud2"></div>
            <div class="cloud3"></div>
        </div>
        <div class="windmill"></div>
        <div class="fc">
            <div class="fc1"></div>
            <div class="fc2"></div>
        </div>
    </div>
</body>

</html>